流砂现象指的是当基坑挖土达到地下水位以下，而土是细砂或粉砂，又采用集水坑降水时，在一定的动水压力作用下，坑底下的土就会形成流动状态，随地下水一起流动涌进坑内，发生的现象称为流砂现象。
施工过程均保持基坑在干地条件下安全进行，未出现突水流砂现象。
During work procedures, dry ground was assured always for foundation pit work safety, without any water spout or quicksand happening.
本文介绍了人工挖孔桩中几种克服流砂现象的措施，可供工程施工中参考借鉴。
In this paper some measures for controlling running sand during artificial digging hole pile construction was introduced, they can be used as reference to engineering construction.
如基础地基四周有暗河、流砂、污泥等现象，应采取有效措施使地基承载力达到规定要求。
If the foundation is surrounded by rivers, flowing sand, sludge and other phenomena, we should take effective measures to meet the requirements of bearing capacity of foundation.
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